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primary wave
NOUN
1.
Seismology. P wave.
Source: Dictionary.com
primary wave | Define primary wave at Dictionary.com
dictionary.reference.com/browse/primary wave
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en.wikipedia.org/wiki/P-wave

Primary and secondary waves are body waves that travel within the Earth. The motion and behavior of both P-type ...

www.geo.mtu.edu/UPSeis/waves.html

Seismology is the study of earthquakes and seismic waves that move through ... P Waves. The first kind of body wave is the P wave or primary wave. This is the ...

earthquake.usgs.gov/learn/glossary/?term=P%20wave

P wave. A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the  ...

www.iris.edu/hq/inclass/animation/seismic_wave_motions

An earthquake generates seismic waves that penetrate the Earth as body waves (P & S) or travel as surface waves (Love and Rayleigh). Each wave has a ...

www.bbc.co.uk/schools/gcsebitesize/science/21c/earth_universe/seismic_wavesrev1.shtml

A secondary school revision resource for OCR GCSE 21st Century Science about the Earth in the Universe and seismic waves.

www.colorado.edu/physics/phys2900/homepages/Marianne.Hogan/waves.html

Earthquakes generate three types of seismic waves: P (primary) waves, S ( secondary) waves and surface waves, which arrive at seismic recording stations one ...

www.kids-fun-science.com/p-waves.html

Inge Lehmann in 1936 used the travel times of P waves through the center of the Earth to prove the existence of a solid inner core of the Earth.

www.dictionary.com/browse/primary-wave

primary wave. A type of seismic body wave in which rock particles vibrate parallel to the direction of wave travel. Primary waves are alternatingly compressional ...

seismo.berkeley.edu/blog/2008/09/10/p-waves-and-s-waves-which-are-faster.html

Sep 10, 2008 ... The magnitude 4.0 earthquake, which struck under Alamo last Friday night, was felt widely in the greater Bay Area, from Half Moon Bay in the ...